Related Photo Galleries
Believe it or not, this 4.6-liter Three-Valve engine is sitting in the engine bay of a '98 Mustang GT. That's right. Keith and Duane Logan of Logan Motorsports have completed development of a one-stop package that makes replacing a '96-'04 Two-Valve engine with an '05-'10 Three-Valve 4.6, a simple swap. We really like this new swap for '96-'98 GTs that haven't been treated to a PI upgrade, as unmodified Three-Valves typically can add more than 100 hp to the feet of those under-powered 'Stangs.